Tesla will compete its Nevada based Gigafactory,the biggest one in the world, by 2018. But there are several Chinese who plan to provide almost 3.5 times more gigawatt-hours of battery cells a year than the Gigafactory by 2021, according to Bloomberg report. Tesla Gigafactory plant to produce,according to Tesla, more lithium-ion batteries per year than total produced worldwide in year 2013.
The lithium ion batteries, most commonly used in personal electronic devices, will become essential as electric cars and renewable energy plants take over. China already makes up 55% of global lithium-ion battery production according to Bloomberg, and by 2021 they are expected to hold 65% of all production. As renewable energy sources like Solar ,Wind are leaving coal behind, China is pushing hard for clean renewable energy sources.